unorm2_getNFCInstance

// icuuc.dll
#include <windows.h>

UNormalizer2* unorm2_getNFCInstance(
    UErrorCode* pErrorCode
);

<DllImport("icuuc.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function unorm2_getNFCInstance(
    ByRef pErrorCode As Integer   ' UErrorCode* in/out
) As IntPtr
End Function

' pErrorCode : UErrorCode* in/out
Declare PtrSafe Function unorm2_getNFCInstance Lib "icuuc" ( _
    ByRef pErrorCode As Long) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

unorm2_getNFCInstance = ctypes.cdll.icuuc.unorm2_getNFCInstance
unorm2_getNFCInstance.restype = ctypes.c_void_p
unorm2_getNFCInstance.argtypes = [
    ctypes.c_void_p,  # pErrorCode : UErrorCode* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuuc.dll')
unorm2_getNFCInstance = Fiddle::Function.new(
  lib['unorm2_getNFCInstance'],
  [
    Fiddle::TYPE_VOIDP,  # pErrorCode : UErrorCode* in/out
  ],
  Fiddle::TYPE_VOIDP, Fiddle::Function::CDECL)

#[link(name = "icuuc")]
extern "C" {
    fn unorm2_getNFCInstance(
        pErrorCode: *mut i32  // UErrorCode* in/out
    ) -> *mut isize;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("icuuc.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr unorm2_getNFCInstance(ref int pErrorCode);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icuuc_unorm2_getNFCInstance' -Namespace Win32 -PassThru
# $api::unorm2_getNFCInstance(pErrorCode)

#uselib "icuuc.dll"
#func global unorm2_getNFCInstance "unorm2_getNFCInstance" sptr
; unorm2_getNFCInstance varptr(pErrorCode)   ; 戻り値は stat
; pErrorCode : UErrorCode* in/out -> "sptr"
; ※HSP3.7は #func のため戻り値はシステム変数 stat に格納されます。

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	icuuc = windows.NewLazySystemDLL("icuuc.dll")
	procunorm2_getNFCInstance = icuuc.NewProc("unorm2_getNFCInstance")
)

// pErrorCode (UErrorCode* in/out)
r1, _, err := procunorm2_getNFCInstance.Call(
	uintptr(pErrorCode),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // UNormalizer2*

function unorm2_getNFCInstance(
  pErrorCode: Pointer   // UErrorCode* in/out
): Pointer; cdecl;
  external 'icuuc.dll' name 'unorm2_getNFCInstance';

result := DllCall("icuuc\unorm2_getNFCInstance"
    , "Ptr", pErrorCode   ; UErrorCode* in/out
    , "Cdecl Ptr")   ; return: UNormalizer2*

●unorm2_getNFCInstance(pErrorCode) = DLL("icuuc.dll", "void* unorm2_getNFCInstance(void*)")
# 呼び出し: unorm2_getNFCInstance(pErrorCode)
# pErrorCode : UErrorCode* in/out -> "void*"
# なでしこ1は32bit・ANSI(Shift_JIS)。文字列=char*(ANSI)、ポインタ/ハンドル=void*(4byte)。
# ※cdecl関数。DLL()宣言はstdcall前提。cdeclは EXEC_PTR(`cdecl`,…) を使用。

const std = @import("std");

extern "icuuc" fn unorm2_getNFCInstance(
    pErrorCode: [*c]i32 // UErrorCode* in/out
) callconv(.c) [*c]isize;

proc unorm2_getNFCInstance(
    pErrorCode: ptr int32  # UErrorCode* in/out
): ptr int {.importc: "unorm2_getNFCInstance", cdecl, dynlib: "icuuc.dll".}

pragma(lib, "icuuc");
extern(C)
ptrdiff_t* unorm2_getNFCInstance(
    int* pErrorCode   // UErrorCode* in/out
);

ccall((:unorm2_getNFCInstance, "icuuc.dll"), Ptr{Int},
      (Ptr{Int32},),
      pErrorCode)
# pErrorCode : UErrorCode* in/out -> Ptr{Int32}

local ffi = require("ffi")
ffi.cdef[[
intptr_t* unorm2_getNFCInstance(
    int32_t* pErrorCode);
]]
local icuuc = ffi.load("icuuc")
-- icuuc.unorm2_getNFCInstance(pErrorCode)
-- pErrorCode : UErrorCode* in/out
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('icuuc.dll');
const unorm2_getNFCInstance = lib.func('__cdecl', 'unorm2_getNFCInstance', 'intptr_t *', ['int32_t *']);
// unorm2_getNFCInstance(pErrorCode)
// pErrorCode : UErrorCode* in/out -> 'int32_t *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("icuuc.dll", {
  unorm2_getNFCInstance: { parameters: ["pointer"], result: "pointer" },
});
// lib.symbols.unorm2_getNFCInstance(pErrorCode)
// pErrorCode : UErrorCode* in/out -> "pointer"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
intptr_t* unorm2_getNFCInstance(
    int32_t* pErrorCode);
C, "icuuc.dll");
// $ffi->unorm2_getNFCInstance(pErrorCode);
// pErrorCode : UErrorCode* in/out
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Icuuc extends Library {
    Icuuc INSTANCE = Native.load("icuuc", Icuuc.class);
    Pointer unorm2_getNFCInstance(
        IntByReference pErrorCode   // UErrorCode* in/out
    );
}

@[Link("icuuc")]
lib Libicuuc
  fun unorm2_getNFCInstance = unorm2_getNFCInstance(
    pErrorCode : Int32*   # UErrorCode* in/out
  ) : LibC::SSizeT*
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef unorm2_getNFCInstanceNative = Pointer<IntPtr> Function(Pointer<Int32>);
typedef unorm2_getNFCInstanceDart = Pointer<IntPtr> Function(Pointer<Int32>);
final unorm2_getNFCInstance = DynamicLibrary.open('icuuc.dll')
    .lookupFunction<unorm2_getNFCInstanceNative, unorm2_getNFCInstanceDart>('unorm2_getNFCInstance');
// pErrorCode : UErrorCode* in/out -> Pointer<Int32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function unorm2_getNFCInstance(
  pErrorCode: Pointer   // UErrorCode* in/out
): Pointer; cdecl;
  external 'icuuc.dll' name 'unorm2_getNFCInstance';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import ccall safe "unorm2_getNFCInstance"
  c_unorm2_getNFCInstance :: Ptr Int32 -> IO (Ptr CIntPtr)
-- pErrorCode : UErrorCode* in/out -> Ptr Int32
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let unorm2_getnfcinstance =
  foreign "unorm2_getNFCInstance"
    ((ptr int32_t) @-> returning (ptr intptr_t))
(* pErrorCode : UErrorCode* in/out -> (ptr int32_t) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library icuuc (t "icuuc.dll"))
(cffi:use-foreign-library icuuc)

(cffi:defcfun ("unorm2_getNFCInstance" unorm2-get-nfcinstance :convention :cdecl) :pointer
  (p-error-code :pointer))   ; UErrorCode* in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $unorm2_getNFCInstance = Win32::API::More->new('icuuc',
    'LPVOID unorm2_getNFCInstance(LPVOID pErrorCode)');
# my $ret = $unorm2_getNFCInstance->Call($pErrorCode);
# pErrorCode : UErrorCode* in/out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。